下列各项,不属于急惊风四大基本治法的是()
A.清热
B.养阴
C.豁痰
D.镇惊
E.息风
参考答案:B
—Do you think David will fail in the maths exam again?
—________.
A.No,I don't believe it
B.I hope not
C.I expect not
D.I don't suppose it
铁路运输的技术经济特征。